Sifting apparatus



Dec. 18, 1934. A F, G SCHWARTZ 1,985,109

SIFTING APPARATUS Filed Feb. ll, 1933 YPatented Dec. 1.8, 1934 UNITED Y vsnv'rINef APPAitATVS c Frederick George Schwart/LrBeirley,A Ohiol applicati@ February 11, 1933, serial No. 656,350

4 Claims.

vThis invention rentes to a sifting apparatus, and it an object of the inventionjto provide an apparatus of this kind 'wherein a sifting element when desired may be readily removed s that the 6' device may -be employed for the Ac'ollec'tiori ofrub'- bish. v v l Another object of the linventiron to provide a device of this kind including two separate units,

one oi the units constituting 'a housing and other a sifting element adapted to lbe reciprocated upon the housing and wherein'tli housing carries means for suspending agbag" or Rind-red collecting receptacle within thehous'iig'; c

TheY investiga consists in ,me aeg-nis reenf struction and in the combination and arrange'.-V me'nt of the several parts of my improved sifting apparatus whereby certain-important advantages are attained andthe device rendered simpler, less eipensive and otherwise more convenientand advantageous for use, as will be hereinafter more fuilysetfo'rth.

" The novel features lof my invention will here# marier befdenniteiy manned. y l In" order that my invention b'ethe better understood, I will now proceed t'ofde'scribe the same with reference to the accompanying drawing, Wherein:

Figure 1 is a vertical sectional View taken through a sifting apparatus constructed in accordance with an embodiment of my invention;

Figure 2 is an enlarged fragmentary sectional view taken substantially'on the line 2--2 of Figure 1 looking in the direction of the arrows;

Figure 3 is a fragmentary detail view partly in section and partly in elevation illustrating the mounting for one of the supporting rollers carried by the housing unit and with which the sifting element engages.

As herein disclosed my improved apparatus comprises two units A and B, the unit A'consti tuting a sifting element and the unit B a housing of desired dimensions.

The element or housing B comprises in its construction the corner posts l each preferably an angle iron with said posts connected by the panels 2 of sheet metal or any other desired material. The panels 2 as illustrated in Figure 1y of the drawing preferably terminate a slight distance above the lower ends of the corner posts or irons 1 so that such panels will 011er no obstruction to the desired placement of the unit or housing B. The lower ends of the corner posts or irons 1 are also preferably pointed, as at 3, to facilitate the maintenance of the apparatus against shifting r or creeping during a sifting operation.

(c1. zoerzisv) 1 Y, esecuredio iuidif sin? facevi the Sangre 5 Ofihlme ,ets'tafidhel marginal ,Festivos ,6.0i Ihiehbpperi do nwaidlyincliii d ppfer'sijaiii wel c e @ably Seuared ebrlo wiihynch are operati' Interposed between the anges 8 and v9jvare Stripsv 11., fsaidstripsbeine 0i .a vidthiiiety '15" 14,.. This vlral Serres, 0 means to leiectively close t Each of the flanges 5 and the portion 6 of the hopper' 7 at desired points therealo-ng have disposed therethrough openings 16 in each of which is positioned a roller 17. Thisy roller 17 extends a slight distance above the flange 5 and is provided at its opposite ends with the trunnions 18 which are rotatably received between the ange 5 and the portion 6 of the hopper 7 in the registering bearing recesses v19. The rollers 17 have directly resting thereon from above the elongated side irons or members 20 secured to the ,lower portions of the upstanding hopper 21 comprised in the sifting element A.

The irons or members 20 extend a desired distance beyond opposite sides of the hopper 21 and the outer or free ends of the irons or members 20 are connected by the cross handles 22 providing eiective means to reciprocate the unit A to eifect a separation of the material placed within the hopper 21, said separation ofcourse being effected by the screen fabric 23 disposed over the bottom of the hopper 21.

The opposite walls of the hopper 21 are continued by the outstanding plates 24 terminating in the depending anges 25, said flanges 25 providing stops for contact with the upper end of the unit B to limit the extent of reciprocation of the unit A when in working position upon the unit B. As is believed to be apparent the spacing of the flanges 25 with respect to the hopper 21 determines the maximum extent of endWise travel of the hopper 21. The plates 24 also serve to maintain substantially closed the upper portion of the hopper '7 irrespective of the position of the sifting element A to hold back the dust during'a sifting operation.

The upper or top end of the hopper 21 is adapted to be closed in a conventional manner by a removable cover or lid 26.

With my improved apparatus it is to be noted that ashes may be readily sifted When desired with the resultant saving of the cinders the ashes of course being collected Within the bag or kindred container C. The bag C When filled can be readily removed and replaced.

When desired the unit A can be entirely separated from the unit B thus providing a structure whereby the bag or container C may be employed for the collection of rubbish.

From the foregoing description it is thought to beobvious that a sifting apparatus constructed kin accordance with my invention isparticularly Well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not Wish to be understood as limiting myself to the precise arrangement and formation of the` several parts herein shown in carrying Lout my invention in practice except as hereinafter claimed.

I claimt- 1. An apparatus of the class described comprising two separable units, one of said units constituting a housing and the other a sifting element, ay hopper disposed over the upper portion of the housing, rollers carried by vthenoarginal portions of the hopper, the sifting element when applied resting upon the rollers, and plates carried by the sifting element and extending fore and aft-thereof,` said plates having depending flanges providing stops for contact with'the housing for limiting the extentof reciprocation of the sifting element, said plates being of a length to close the upper portion of the hopper fore and aft of the sifting element irrespective of the position of the sifting element.

2. An apparatus of the class described comprising two units, one of said units constituting a housing and the other a sifting element, a hopper disposed over theupper portion of the housing, means fo-r supporting the sifting element by the housing above the hopper, said sifting element having reciprocating movement,` plates extending fore and aft of the sifting element and of a length to substantially close the upper portion of the hopper fore and aft of the sifting element in the different positions of the sifting element, and means carried by said plates for contact With the housing to limit the extent of reciprocation of the sifting element.

3. An apparatus of the class described comprising a supporting structure, a hopper carried thereby for discharge Within a container, a sifting element mounted on the supporting structure for reciprocating movement above the hopper, plates carried by the sifting element and extending fore and aft thereof, said plates being of a length to substantially close the upper portion of the hopper in all positions of the sifting element during its reciprocation, said plates having means contacting with the supporting structure for limiting the extent of reciprocation of the sifting element.

4. An apparatus of the class described comprising a supporting structure, a hopper carried thereby for discharge Within a container; a sifting element mounted on the supporting structure for reciprocating movement above the hopper, plates carried by the sifting element and extending fore and aft thereof,l said plates being of a length to substantially close the upper portion of the hopper in all positions of the sifting element during its reciprocation, said plates having means' contacting with the supporting structure forlimiting the Aextent of reciprocation of the sifting element,vand means for closing the hopper against iiow therethrough. Y

FREDERICK GEORGE SCHWARTZ. 

